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Title: Measurements of the absolute branching fractions for D→$$\bar{K}$$πe +ν e, D→$$\bar{K}$$*e +ν e and determination of Γ(D +→$$\bar{K}$$* oe +ν e)/Γ(D +→$$\bar{K}$$ oe +ν e)

Abstract

Using the data of about 33 pb -1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied the exclusive semileptonic decays D +→K -π +e +ν e, D o→$$\bar{K}$$ oπ -e +ν e, D +→$$\bar{K}$$* oe +ν e and D o→K* -e +ν e. The absolute branching fractions for the decays are measured to be BF(D +→K -π +e +ν e)=(3.50±0.75±0.27)%, BF(D o→$$\bar{K}$$ oπ -e +ν e)=(2.61±1.04±0.28)%, BF(D +→$$\bar{K}$$* oe +ν e)=(5.06±1.21±0.40)% and BF(D o→K* -e +ν e)=(2.87±1.48±0.39)%. As a result, the ratio of the vector to pseudoscalar semileptonic decay rates Γ(D +→$$\bar{K}$$* oe +ν e)/Γ(D +→$$\bar{K}$$ oe +ν e) is determined to be 0.57±0.17±0.02.

Authors:
 [1]
  1. Institute of High Energy Physics, Beijing (People's Republic of China). et al.
Publication Date:
Research Org.:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Contributing Org.:
The BES Collaboration
OSTI Identifier:
1358414
Grant/Contract Number:  
SC0010504
Resource Type:
Accepted Manuscript
Journal Name:
European Physical Journal. C, Particles and Fields
Additional Journal Information:
Journal Volume: 47; Journal Issue: 1; Journal ID: ISSN 1434-6044
Publisher:
Springer
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Ablikim, M. Measurements of the absolute branching fractions for D→$\bar{K}$πe+νe, D→$\bar{K}$*e+νe and determination of Γ(D+→$\bar{K}$*oe+νe)/Γ(D+→$\bar{K}$oe+νe). United States: N. p., 2006. Web. doi:10.1140/epjc/s2006-02558-x.
Ablikim, M. Measurements of the absolute branching fractions for D→$\bar{K}$πe+νe, D→$\bar{K}$*e+νe and determination of Γ(D+→$\bar{K}$*oe+νe)/Γ(D+→$\bar{K}$oe+νe). United States. doi:10.1140/epjc/s2006-02558-x.
Ablikim, M. Mon . "Measurements of the absolute branching fractions for D→$\bar{K}$πe+νe, D→$\bar{K}$*e+νe and determination of Γ(D+→$\bar{K}$*oe+νe)/Γ(D+→$\bar{K}$oe+νe)". United States. doi:10.1140/epjc/s2006-02558-x. https://www.osti.gov/servlets/purl/1358414.
@article{osti_1358414,
title = {Measurements of the absolute branching fractions for D→$\bar{K}$πe+νe, D→$\bar{K}$*e+νe and determination of Γ(D+→$\bar{K}$*oe+νe)/Γ(D+→$\bar{K}$oe+νe)},
author = {Ablikim, M.},
abstractNote = {Using the data of about 33 pb-1 collected at and around 3.773 GeV with the BES-II detector at the BEPC collider, we have studied the exclusive semileptonic decays D+→K-π+e+νe, Do→$\bar{K}$oπ-e+νe, D+→$\bar{K}$*oe+νe and Do→K*-e+νe. The absolute branching fractions for the decays are measured to be BF(D+→K-π+e+νe)=(3.50±0.75±0.27)%, BF(Do→$\bar{K}$oπ-e+νe)=(2.61±1.04±0.28)%, BF(D+→$\bar{K}$*oe+νe)=(5.06±1.21±0.40)% and BF(Do→K*-e+νe)=(2.87±1.48±0.39)%. As a result, the ratio of the vector to pseudoscalar semileptonic decay rates Γ(D+→$\bar{K}$*oe+νe)/Γ(D+→$\bar{K}$oe+νe) is determined to be 0.57±0.17±0.02.},
doi = {10.1140/epjc/s2006-02558-x},
journal = {European Physical Journal. C, Particles and Fields},
number = 1,
volume = 47,
place = {United States},
year = {2006},
month = {5}
}

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